Multimedia message transmission method for TD-SCDMA (time division-synchronization code division multiple access) cluster communication system
A TD-SCDMA, multimedia message technology, applied in the field of multimedia message transmission, can solve the problems that affect the end-to-end success rate, cannot effectively reflect the characteristics of the shared resources of the trunking system, and reduce the wireless connection rate, so as to ensure successful transmission. rate effect
Inactive Publication Date: 2013-08-07
SHENZHEN TINNO WIRELESS TECH
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Problems solved by technology
[0005] The above method used in the cluster system will bring the following problems: After the system sends a PUSH notification message to all users in the group, each user initiates a GET request to establish a service channel. At this time, the system load will increase sharply, and the wireless connection rate will drop, which affects end-to-end success rate
And the use of this mechanism cannot effectively reflect the characteristics of shared resources of the cluster system
Method used
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[0016] In order to realize trunking command and dispatch communication based on the existing TD-SCDMA technology and support new trunking communication services such as PUSH to X (X means voice, image, video and data), the TD-SCDMA trunking communication system adds a dispatching switching domain (DS domain ), and coexist with existing services in isolation; the network side adds a cluster scheduling subsystem (DSS); in order to realize the cluster scheduling service, a scheduling controller PDC is added on the wireless access side, and four physical channels are added to the air interface: uplink dedicated service channel ( T-PUCH), downlink group traffic channel (T-PDCH), uplink shared control channel (T-PUCCH), downlink shared control channel (T-PDCCH). Among them, the cluster dispatching subsystem DSS includes three parts: the dispatching server PDS, the dispatching position register PHR and the dispatching station proxy server (the dispatching station server DAS and the di...
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The invention relates to a multimedia message transmission method for a TD-SCDMA (time division-synchronization code division multiple access) cluster communication system, which comprises steps as follows: a message center client, a wired dispatcher station or a wireless cluster terminal transmits a multimedia message to a multimedia message center in a POST mode; the multimedia message center inquires group user information in a DSS (dispatch subsystem), a Node-B performs multimedia message multicast on the group users in a cell at a fixed time interval within a set time, and the group users report respective receiving response after receiving the multimedia messages; and as for the terminal which does not report a receiving response, the multimedia message center transmits a notification message to the group users, and the group users having received the notification message manually acquire the multimedia messages. According to the invention, the multimedia messages can be transmitted and dispatched in the TD-SCDMA cluster communication system rapidly and effectively, and the end-to-end success rate of the multimedia messages can be effectively ensured.
Description
technical field [0001] The invention relates to the communication field, and more specifically, relates to a multimedia message transmission method of a TD-SCDMA trunking communication system. Background technique [0002] The trunking communication system based on the third generation mobile communication technology TD-SCDMA (such as figure 1 Shown) is the combination of cellular communication technology and professional dispatching communication system, using half-duplex and full-duplex communication methods. TD-SCDMA trunking communication system can not only realize fast call connection, support group call and multicast call, but also carry various multimedia services (such as video, picture, sound and text, etc.) and satisfy high-speed wireless data transmission. The trunking communication system based on my country's self-developed TD-SCDMA technology can not only be widely used in enterprises and institutions that have high requirements for command and dispatch funct...
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IPC IPC(8): H04W4/10H04W4/12
Inventor李强于游陈前斌唐宏孙瑞杰汪洋陈俊鹏
OwnerSHENZHEN TINNO WIRELESS TECH